Question

Match the types of WBC listed in column I with the shape of nucleus given under column II. Choose the answer which gives the correct combination of alphabets of two columns.

	Column I		Column II
	Type of WBC		Shape of Nucleus
a	Neutrophils	p	Kidney shaped
b	Eosinophils	q	S-shaped
c	Basophils	r	$3-5$ lobes
d	Monocytes	s	$2$ lobes
		t	disc-shaped

• A. a$=$r, b$=$t, c$=$p, d$=$q
• B. a$=$t, b$=$r, c$=$q, d$=$s
• C. a$=$q, b$=$p, c$=$t, d$=$r
• D. a$=$r, b$=$s, c$=$q, d$=$p

Answer 1

The correct option is D a$=$r, b$=$s, c$=$q, d$=$p

• Hypersegmented neutrophil. When stained, neutrophils have a segmented nucleus and pink/orange cytoplasm under light microscope. The majority of neutrophils have three nuclear segments (lobes) connected by tapering chromatin strands. A small percentage have four lobes, and occasionally five lobes may be seen.
  
• Eosinophils usually have bilobed nuclei
  
• Basophilic granulocytes have a 2 or 3 lobed nucleus. The lobes are usually not as well defined as in neutrophilic granulocytes and the nucleus may appear S-shaped.
  
• Monocytes have one large nucleus, which is usually centrally placed within the cell and often kidney shaped

So, the correct answer is 'a=r, b=s, c=q, d=p'.